64 



CHEMISTRY. 



(83) FACTORS FOR VOLUMETRIC ANALYSIS. 

 Molecular and atomic weights with their logarithms. 



Logarithms of the ratios of the combining proportions of volu- 

 metric reagents and of substances with which they react. 



Log. mass subst. required = log. number of ccm. taken + log. 

 mass reagent in 1 ccm. + tabular log. 



